Granted Patent
Utility
US 6,296,183 · App. 08/997,361
Telephony system for smart card usage
Inventor:
Theresa Clark
Patented Case
View Patent ↗
Granted: Oct 2, 2001
Filed: Dec 23, 1997
Inventor
Theresa Clark
Assignee (at issue)
Qwest Communications Int'l., Inc.
This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.